长江滩地不同林龄杨树人工林植物群落物种多样性研究  

Species Diversity in Poplar Plantations at Different Ages along the Banks of Yangtze River

作　　者：胡兴宜[1] 唐万鹏[1] 刘学全[1] 

机构地区：[1]湖北省林业科学研究院,武汉430072

出　　处：《湿地科学与管理》2006年第4期24-27,共4页Wetland Science & Management

摘　　要：本文以石首、公安长江外滩不同林龄杨树人工群落为研究对象,研究了林下植物群落物种多样性的变化规律,结果表明:滩地立地条件较好,适合多种植物生长;滩地造林对土壤养分和草本植物种群数量分布的影响不大;有林地的多样性指数比无林地略有上升,不同林龄草本植物群落的丰富度指数R和多样性指数H′大于1.0、多样性指数D和均匀度指数J小于1.0,且与林龄的变化基本没有相关性,确定了物种多样性指数模型。Patterns of variation of species diversity was studied in Poplar plantations at different ages along the banks of Yangtze River in Shishou and Gong＇an counties, The river banks were found to have good site conditions and suitable for growing many plant species. The impact of Poplar plantations was small on soil nutrition and distribution of herbaceous plant communities. The index of species diversity is slightly larger in the forested land than in the non-forested land, The richness index R and the diversity index H＇ of herbaceous plant communities in stands at different ages are bigger than 1.0, and the diversity index D and the evenness index J are smaller than 1.0, no correlation was found between the indices and the stand ages. Species diversity models were developed in the study.

关 键 词：长江滩地 杨树林 林下植物群落 物种多样性 

分 类 号：S792.11[农业科学—林木遗传育种]